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Posted: 1/27/2021 1:41:30 PM EDT
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Posted: 1/27/2021 1:43:44 PM EDT
[#1]
I heard that Grissom took one look at the Apollo system and declared it a lemon.
And boy howdy he was right. But this sort of thing is a risk you take when you're breathing a pure oxygen atmosphere as opposed to oxygen-nitrogen. |
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Posted: 1/27/2021 1:50:06 PM EDT
[#2]
Quote HistoryQuoted: I heard that Grissom took one look at the Apollo system and declared it a lemon. And boy howdy he was right. But this sort of thing is a risk you take when you're breathing a pure oxygen atmosphere as opposed to oxygen-nitrogen. NASA had considered the risk of pure oxygen and considered it less of a hazard than the bends. Filling the cabin with flammable material was inexcusable. |
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Posted: 1/27/2021 1:50:57 PM EDT
[#3]
Quote HistoryQuoted: But this sort of thing is a risk you take when you're breathing a pure oxygen atmosphere as opposed to oxygen-nitrogen. I'm not a physicist or a rocket scientist or anything like that, but I spent enough time with an oxy-acetylene torch to know pure O2 is not something to fuck around with. |
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Posted: 1/27/2021 1:54:22 PM EDT
[#4]
Quote HistoryQuoted: NASA had considered the risk of pure oxygen and considered it less of a hazard than the bends. Filling the cabin with flammable material was inexcusable. Quote HistoryQuoted: Quoted: I heard that Grissom took one look at the Apollo system and declared it a lemon. And boy howdy he was right. But this sort of thing is a risk you take when you're breathing a pure oxygen atmosphere as opposed to oxygen-nitrogen. NASA had considered the risk of pure oxygen and considered it less of a hazard than the bends. Filling the cabin with flammable material was inexcusable. Technically, IIRC, the materials were not flammable at the nominal operating conditions. The capsule was OVER pressurized to simulate the pressure differential. This changed everything, including making the hatch harder to open. |
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Posted: 1/27/2021 1:56:37 PM EDT
[#5]
You have to assume there was a recording from the cockpit?
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Posted: 1/27/2021 1:58:59 PM EDT
[#6]
Quote HistoryQuoted: You have to assume there was a recording from the cockpit? There is. I think the last thing they said was something about being unable to talk between 2 buildings. The documentary I was watching cut off shortly after that. I have no desire to hear the screams of good men dying in a fire. |
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Posted: 1/27/2021 1:59:29 PM EDT
[#7]
Quote HistoryQuoted: You have to assume there was a recording from the cockpit?  Apollo 1 Audio - 27 January, 1967 |
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Posted: 1/27/2021 2:01:43 PM EDT
[#8]
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Posted: 1/27/2021 2:02:13 PM EDT
[#9]
Quote HistoryQuoted: You have to assume there was a recording from the cockpit? There is on YT. |
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Posted: 1/27/2021 2:02:20 PM EDT
[#10]
Mercury and Gemini used 100% oxygen systems.
Carried into Apollo because of this. Using a mixture of oxygen/nitrogen ONLY at launch then bleeding the nitrogen off during ascent will the CSM will be at 100% oxygen. This mod was done post A7 fire. |
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Posted: 1/27/2021 2:03:19 PM EDT
[#11]
Quote HistoryQuoted: Technically, IIRC, the materials were not flammable at the nominal operating conditions. The capsule was OVER pressurized to simulate the pressure differential. This changed everything, including making the hatch harder to open. Quote HistoryQuoted: Quoted: Quoted: I heard that Grissom took one look at the Apollo system and declared it a lemon. And boy howdy he was right. But this sort of thing is a risk you take when you're breathing a pure oxygen atmosphere as opposed to oxygen-nitrogen. NASA had considered the risk of pure oxygen and considered it less of a hazard than the bends. Filling the cabin with flammable material was inexcusable. Technically, IIRC, the materials were not flammable at the nominal operating conditions. The capsule was OVER pressurized to simulate the pressure differential. This changed everything, including making the hatch harder to open. IIRC the plan was to have the capsule pressurized above atmospheric pressure at launch and bleed down to ~ 3psi (partial pressure of oxygen in our atmosphere) during ascent. They needed to account for enhanced flammability at the higher pressure on the pad. The process adopted after the fire was to launch with a mixed atmosphere and transition to the low pressure pure oxygen atmosphere in flight. The astronauts still breathed pure oxygen in their suits from the start to prevent the bends. |
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Posted: 1/27/2021 2:03:26 PM EDT
[#12]
I was broken hearted as a kid who followed the space program.
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Posted: 1/27/2021 2:04:27 PM EDT
[#13]
As a kid, my family and I attended a parade to honor Gus Grissom after his Mercury flight. Early 60s, Mitchell, Indiana. His hometown, and he was riding in the back of a convertible, IIRC.
Long time ago....... |
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Posted: 1/27/2021 2:07:34 PM EDT
[#14]
I was 4 1/2 years old at the time and I still remember the pictures on TV. My parents watched Huntley-Brinkley every night in the living room so I was around. Honestly I did not know what exactly was going on at the time but I remember a lot of people were very upset and I remember the funerals several days later on TV.
Quote HistoryQuoted: Technically, IIRC, the materials were not flammable at the nominal operating conditions. A pet peeve of my late father, who was a professor of chemistry, was the oft claim that Oxygen was flammable. It is not. It is dangerous and promotes the combustion of OTHER materials but itself is not flammable. |
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Posted: 1/27/2021 2:13:42 PM EDT
[#15]
That audio..................fuck.
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Posted: 1/27/2021 2:34:29 PM EDT
[#16]
They have the door at the KSC Museum. It is pretty somber to see it.
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Posted: 1/27/2021 2:41:42 PM EDT
[#17]
When I went to HAS a few years ago in highschool I had the pleasure of meeting and talking to Jerry Woodfill. Said he couldn't stand the movie "Apollo 13" because they show the fire starting at a part he made and he said "I designed that part and the fire did not start there."
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Posted: 1/27/2021 2:44:00 PM EDT
[#18]
Quote HistoryQuoted: As a kid, my family and I attended a parade to honor Gus Grissom after his Mercury flight. Early 60s, Mitchell, Indiana. His hometown, and he was riding in the back of a convertible, IIRC. Long time ago....... I need to take my granddaughter to visit the memorial in Bedford.I havent been there in decades.... |
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Posted: 1/27/2021 3:05:25 PM EDT
[#19]
I remember there were three cul-de-sacs not far from me. Grissom Ct, Chafee Ct, and White Ct. I remember my mom trying to explain to me that they were named after Astronauts who died, but I was too young to really understand.
-K |
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Posted: 1/27/2021 4:13:09 PM EDT
[#20]
When I was a kid in the early 1960s, a middle school teacher had small bottle of LOX, and at a PTA meet he had match that he blew the flame, and dropped it into the LOX, the bottle exploded, but fortunately there was only minor injuries from flying debris.
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